VERSION = 2
PATCHLEVEL = 6
-SUBLEVEL = 6
-EXTRAVERSION =
-NAME=Zonked Quokka
+SUBLEVEL = 12
+EXTRAVERSION = .2-vs2.0-rc7
+NAME=Woozy Numbat
# *DOCUMENTATION*
# To see a list of typical targets execute "make help"
#
# Most importantly: sub-Makefiles should only ever modify files in
# their own directory. If in some directory we have a dependency on
-# a file in another dir (which doesn't happen often, but it's of
+# a file in another dir (which doesn't happen often, but it's often
# unavoidable when linking the built-in.o targets which finally
# turn into vmlinux), we will call a sub make in that other dir, and
# after that we are sure that everything which is in that other dir
KBUILD_CHECKSRC = 0
endif
-# Use make M=dir to specify direcotry of external module to build
+# Use make M=dir to specify directory of external module to build
# Old syntax make ... SUBDIRS=$PWD is still supported
# Setting the environment variable KBUILD_EXTMOD take precedence
ifdef SUBDIRS
# kbuild supports saving output files in a separate directory.
-# To locate output files in a separate directory two syntax'es are supported.
+# To locate output files in a separate directory two syntaxes are supported.
# In both cases the working directory must be the root of the kernel src.
# 1) O=
# Use "make O=dir/to/store/output/files/"
# export KBUILD_OUTPUT=dir/to/store/output/files/
# make
#
-# The O= assigment takes precedence over the KBUILD_OUTPUT environment variable.
+# The O= assignment takes precedence over the KBUILD_OUTPUT environment
+# variable.
# KBUILD_SRC is set on invocation of make in OBJ directory
# check that the output directory actually exists
saved-output := $(KBUILD_OUTPUT)
KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
-$(if $(wildcard $(KBUILD_OUTPUT)),, \
+$(if $(KBUILD_OUTPUT),, \
$(error output directory "$(saved-output)" does not exist))
.PHONY: $(MAKECMDGOALS)
$(filter-out _all,$(MAKECMDGOALS)) _all:
$(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
KBUILD_SRC=$(CURDIR) KBUILD_VERBOSE=$(KBUILD_VERBOSE) \
- KBUILD_CHECK=$(KBUILD_CHECK) KBUILD_EXTMOD=$(KBUILD_EXTMOD) \
+ KBUILD_CHECK=$(KBUILD_CHECK) KBUILD_EXTMOD="$(KBUILD_EXTMOD)" \
-f $(CURDIR)/Makefile $@
# Leave processing to above invocation of make
_all: modules
endif
-# Make sure we're not wasting cpu-cycles doing locale handling, yet do make
-# sure error messages appear in the user-desired language
-ifdef LC_ALL
-LANG := $(LC_ALL)
-LC_ALL :=
-endif
-LC_COLLATE := C
-LC_CTYPE := C
-export LANG LC_ALL LC_COLLATE LC_CTYPE
-
srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
TOPDIR := $(srctree)
# FIXME - TOPDIR is obsolete, use srctree/objtree
export srctree objtree VPATH TOPDIR
-KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
+nullstring :=
+space := $(nullstring) # end of line
+
+# Take the contents of any files called localversion* and the config
+# variable CONFIG_LOCALVERSION and append them to KERNELRELEASE. Be
+# careful not to include files twice if building in the source
+# directory. LOCALVERSION from the command line override all of this
+
+localver := $(objtree)/localversion* $(srctree)/localversion*
+localver := $(sort $(wildcard $(localver)))
+# skip backup files (containing '~')
+localver := $(foreach f, $(localver), $(if $(findstring ~, $(f)),,$(f)))
+
+LOCALVERSION = $(subst $(space),, \
+ $(shell cat /dev/null $(localver)) \
+ $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
+
+KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)$(LOCALVERSION)
# SUBARCH tells the usermode build what the underlying arch is. That is set
# first, and if a usermode build is happening, the "ARCH=um" on the command
quiet=silent_
endif
-check_gcc = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
+export quiet Q KBUILD_VERBOSE
+
+######
+# cc support functions to be used (only) in arch/$(ARCH)/Makefile
+# See documentation in Documentation/kbuild/makefiles.txt
+
+# cc-option
+# Usage: cflags-y += $(call gcc-option, -march=winchip-c6, -march=i586)
+
+cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
+ > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
+
+# For backward compatibility
+check_gcc = $(warning check_gcc is deprecated - use cc-option) \
+ $(call cc-option, $(1),$(2))
+
+# cc-option-yn
+# Usage: flag := $(call cc-option-yn, -march=winchip-c6)
+cc-option-yn = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
+ > /dev/null 2>&1; then echo "y"; else echo "n"; fi;)
+
+# cc-option-align
+# Prefix align with either -falign or -malign
+cc-option-align = $(subst -functions=0,,\
+ $(call cc-option,-falign-functions=0,-malign-functions=0))
+
+# cc-version
+# Usage gcc-ver := $(call cc-version $(CC))
+cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh \
+ $(if $(1), $(1), $(CC)))
-export quiet Q KBUILD_VERBOSE check_gcc
# Look for make include files relative to root of kernel src
MAKEFLAGS += --include-dir=$(srctree)
OBJCOPY = $(CROSS_COMPILE)objcopy
OBJDUMP = $(CROSS_COMPILE)objdump
AWK = awk
-RPM := $(shell if [ -x "/usr/bin/rpmbuild" ]; then echo rpmbuild; \
- else echo rpm; fi)
GENKSYMS = scripts/genksyms/genksyms
DEPMOD = /sbin/depmod
KALLSYMS = scripts/kallsyms
PERL = perl
CHECK = sparse
+
+CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__
MODFLAGS = -DMODULE
CFLAGS_MODULE = $(MODFLAGS)
AFLAGS_MODULE = $(MODFLAGS)
CFLAGS_KERNEL =
AFLAGS_KERNEL =
-NOSTDINC_FLAGS = -nostdinc -iwithprefix include
-CPPFLAGS := -D__KERNEL__ -Iinclude \
- $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include)
+# Use LINUXINCLUDE when you must reference the include/ directory.
+# Needed to be compatible with the O= option
+LINUXINCLUDE := -Iinclude \
+ $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include)
+
+CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
CFLAGS := -Wall -Wstrict-prototypes -Wno-trigraphs \
- -fno-strict-aliasing -fno-common
+ -fno-strict-aliasing -fno-common \
+ -ffreestanding
AFLAGS := -D__ASSEMBLY__
-export VERSION PATCHLEVEL SUBLEVEL EXTRAVERSION KERNELRELEASE ARCH \
- CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \
+export VERSION PATCHLEVEL SUBLEVEL EXTRAVERSION LOCALVERSION KERNELRELEASE \
+ ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \
CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \
- HOSTCXX HOSTCXXFLAGS LDFLAGS_BLOB LDFLAGS_MODULE CHECK
+ HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
-export CPPFLAGS NOSTDINC_FLAGS OBJCOPYFLAGS LDFLAGS
+export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
# When compiling out-of-tree modules, put MODVERDIR in the module
# tree rather than in the kernel tree. The kernel tree might
# even be read-only.
-export MODVERDIR := $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/).tmp_versions
+export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
# The temporary file to save gcc -MD generated dependencies must not
# contain a comma
# Files to ignore in find ... statements
-RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS \) -prune -o
-RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS
+RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc \) -prune -o
+RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc
# ===========================================================================
# Rules shared between *config targets and build targets
scripts_basic:
$(Q)$(MAKE) $(build)=scripts/basic
+.PHONY: outputmakefile
+# outputmakefile generate a Makefile to be placed in output directory, if
+# using a seperate output directory. This allows convinient use
+# of make in output directory
+outputmakefile:
+ $(Q)if test ! $(srctree) -ef $(objtree); then \
+ $(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
+ $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) \
+ > $(objtree)/Makefile; \
+ echo ' GEN $(objtree)/Makefile'; \
+ fi
+
# To make sure we do not include .config for any of the *config targets
# catch them early, and hand them over to scripts/kconfig/Makefile
# It is allowed to specify more targets when calling make, including
# *config targets only - make sure prerequisites are updated, and descend
# in scripts/kconfig to make the *config target
-config: scripts_basic FORCE
+# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
+# KBUILD_DEFCONFIG may point out an alternative default configuration
+# used for 'make defconfig'
+include $(srctree)/arch/$(ARCH)/Makefile
+export KBUILD_DEFCONFIG
+
+config: scripts_basic outputmakefile FORCE
$(Q)$(MAKE) $(build)=scripts/kconfig $@
-%config: scripts_basic FORCE
+%config: scripts_basic outputmakefile FORCE
$(Q)$(MAKE) $(build)=scripts/kconfig $@
else
scripts_basic: include/linux/autoconf.h
-
-# That's our default target when none is given on the command line
-# Note that 'modules' will be added as a prerequisite as well,
-# in the CONFIG_MODULES part below
-
-all: vmlinux
-
# Objects we will link into vmlinux / subdirs we need to visit
init-y := init/
drivers-y := drivers/ sound/
include/linux/autoconf.h: ;
endif
-include $(srctree)/arch/$(ARCH)/Makefile
+# The all: target is the default when no target is given on the
+# command line.
+# This allow a user to issue only 'make' to build a kernel including modules
+# Defaults vmlinux but it is usually overriden in the arch makefile
+all: vmlinux
ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
CFLAGS += -Os
CFLAGS += -O2
endif
-ifndef CONFIG_FRAME_POINTER
+#Add align options if CONFIG_CC_* is not equal to 0
+add-align = $(if $(filter-out 0,$($(1))),$(cc-option-align)$(2)=$($(1)))
+CFLAGS += $(call add-align,CONFIG_CC_ALIGN_FUNCTIONS,-functions)
+CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LABELS,-labels)
+CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LOOPS,-loops)
+CFLAGS += $(call add-align,CONFIG_CC_ALIGN_JUMPS,-jumps)
+
+ifdef CONFIG_FRAME_POINTER
+CFLAGS += -fno-omit-frame-pointer
+else
CFLAGS += -fomit-frame-pointer
endif
CFLAGS += -g
endif
+include $(srctree)/arch/$(ARCH)/Makefile
+
+# arch Makefile may override CC so keep this after arch Makefile is included
+NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
+CHECKFLAGS += $(NOSTDINC_FLAGS)
+
# warn about C99 declaration after statement
-CFLAGS += $(call check_gcc,-Wdeclaration-after-statement,)
+CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
+
+# disable pointer signedness warnings in gcc 4.0
+CFLAGS += $(call cc-option,-Wno-pointer-sign,)
+
+# Default kernel image to build when no specific target is given.
+# KBUILD_IMAGE may be overruled on the commandline or
+# set in the environment
+# Also any assignments in arch/$(ARCH)/Makefile take precedence over
+# this default value
+export KBUILD_IMAGE ?= vmlinux
#
# INSTALL_PATH specifies where to place the updated kernel and system map
-# images. Uncomment if you want to place them anywhere other than root.
-#
-
-#export INSTALL_PATH=/boot
+# images. Default is /boot, but you can set it to other values
+export INSTALL_PATH ?= /boot
#
# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
# Build vmlinux
# ---------------------------------------------------------------------------
+# vmlinux is build from the objects selected by $(vmlinux-init) and
+# $(vmlinux-main). Most are built-in.o files from top-level directories
+# in the kernel tree, others are specified in arch/$(ARCH)Makefile.
+# Ordering when linking is important, and $(vmlinux-init) must be first.
+#
+# vmlinux
+# ^
+# |
+# +-< $(vmlinux-init)
+# | +--< init/version.o + more
+# |
+# +--< $(vmlinux-main)
+# | +--< driver/built-in.o mm/built-in.o + more
+# |
+# +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
+#
+# vmlinux version (uname -v) cannot be updated during normal
+# descending-into-subdirs phase since we do not yet know if we need to
+# update vmlinux.
+# Therefore this step is delayed until just before final link of vmlinux -
+# except in the kallsyms case where it is done just before adding the
+# symbols to the kernel.
+#
+# System.map is generated to document addresses of all kernel symbols
+
+vmlinux-init := $(head-y) $(init-y)
+vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
+vmlinux-all := $(vmlinux-init) $(vmlinux-main)
+vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds
+
+# Rule to link vmlinux - also used during CONFIG_KALLSYMS
+# May be overridden by arch/$(ARCH)/Makefile
+quiet_cmd_vmlinux__ ?= LD $@
+ cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
+ -T $(vmlinux-lds) $(vmlinux-init) \
+ --start-group $(vmlinux-main) --end-group \
+ $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
+
+# Generate new vmlinux version
+quiet_cmd_vmlinux_version = GEN .version
+ cmd_vmlinux_version = set -e; \
+ . $(srctree)/scripts/mkversion > .tmp_version; \
+ mv -f .tmp_version .version; \
+ $(MAKE) $(build)=init
+
+# Generate System.map
+quiet_cmd_sysmap = SYSMAP
+ cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
+
+# Link of vmlinux
+# If CONFIG_KALLSYMS is set .version is already updated
+# Generate System.map and verify that the content is consistent
-# This is a bit tricky: If we need to relink vmlinux, we want
-# the version number incremented, which means recompile init/version.o
-# and relink init/init.o. However, we cannot do this during the
-# normal descending-into-subdirs phase, since at that time
-# we cannot yet know if we will need to relink vmlinux.
-# So we descend into init/ inside the rule for vmlinux again.
-head-y += $(HEAD)
-vmlinux-objs := $(head-y) $(init-y) $(core-y) $(libs-y) $(drivers-y) $(net-y)
-
-quiet_cmd_vmlinux__ = LD $@
-define cmd_vmlinux__
- $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) $(head-y) $(init-y) \
- --start-group \
- $(core-y) \
- $(libs-y) \
- $(drivers-y) \
- $(net-y) \
- --end-group \
- $(filter .tmp_kallsyms%,$^) \
- -o $@
-endef
+define rule_vmlinux__
+ $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
-# set -e makes the rule exit immediately on error
+ $(call cmd,vmlinux__)
+ $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
-define rule_vmlinux__
- +set -e; \
- $(if $(filter .tmp_kallsyms%,$^),, \
- echo ' GEN .version'; \
- . $(srctree)/scripts/mkversion > .tmp_version; \
- mv -f .tmp_version .version; \
- $(MAKE) $(build)=init; \
- ) \
- $(if $($(quiet)cmd_vmlinux__), \
- echo ' $($(quiet)cmd_vmlinux__)' &&) \
- $(cmd_vmlinux__); \
- echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
+ $(Q)$(if $($(quiet)cmd_sysmap), \
+ echo ' $($(quiet)cmd_sysmap) System.map' &&) \
+ $(cmd_sysmap) $@ System.map; \
+ if [ $$? -ne 0 ]; then \
+ rm -f $@; \
+ /bin/false; \
+ fi;
+ $(verify_kallsyms)
endef
-define rule_vmlinux
- $(rule_vmlinux__); \
- $(NM) $@ | grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | sort > System.map
-endef
-LDFLAGS_vmlinux += -T arch/$(ARCH)/kernel/vmlinux.lds.s
+ifdef CONFIG_KALLSYMS
+# Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
+# It's a three stage process:
+# o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
+# empty
+# Running kallsyms on that gives us .tmp_kallsyms1.o with
+# the right size - vmlinux version (uname -v) is updated during this step
+# o .tmp_vmlinux2 now has a __kallsyms section of the right size,
+# but due to the added section, some addresses have shifted.
+# From here, we generate a correct .tmp_kallsyms2.o
+# o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
+# o Verify that the System.map from vmlinux matches the map from
+# .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
+# o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
+# .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
+# temporary bypass to allow the kernel to be built while the
+# maintainers work out what went wrong with kallsyms.
+
+ifdef CONFIG_KALLSYMS_EXTRA_PASS
+last_kallsyms := 3
+else
+last_kallsyms := 2
+endif
-# Generate section listing all symbols and add it into vmlinux
-# It's a three stage process:
-# o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
-# empty
-# Running kallsyms on that gives us .tmp_kallsyms1.o with
-# the right size
-# o .tmp_vmlinux2 now has a __kallsyms section of the right size,
-# but due to the added section, some addresses have shifted
-# From here, we generate a correct .tmp_kallsyms2.o
-# o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
+kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
-ifdef CONFIG_KALLSYMS
+define verify_kallsyms
+ $(Q)$(if $($(quiet)cmd_sysmap), \
+ echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
+ $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
+ $(Q)cmp -s System.map .tmp_System.map || \
+ (echo Inconsistent kallsyms data; \
+ echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
+ rm .tmp_kallsyms* ; /bin/false )
+endef
-kallsyms.o := .tmp_kallsyms2.o
+# Update vmlinux version before link
+# Use + in front of this rule to silent warning about make -j1
+cmd_ksym_ld = $(cmd_vmlinux__)
+define rule_ksym_ld
+ +$(call cmd,vmlinux_version)
+ $(call cmd,vmlinux__)
+ $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
+endef
+# Generate .S file with all kernel symbols
quiet_cmd_kallsyms = KSYM $@
-cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) > $@
+ cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
+ $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
-.tmp_kallsyms1.o .tmp_kallsyms2.o: %.o: %.S scripts FORCE
+.tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
$(call if_changed_dep,as_o_S)
-.tmp_kallsyms%.S: .tmp_vmlinux%
+.tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
$(call cmd,kallsyms)
-.tmp_vmlinux1: $(vmlinux-objs) arch/$(ARCH)/kernel/vmlinux.lds.s FORCE
- +$(call if_changed_rule,vmlinux__)
+# .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
+.tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
+ $(call if_changed_rule,ksym_ld)
-.tmp_vmlinux2: $(vmlinux-objs) .tmp_kallsyms1.o arch/$(ARCH)/kernel/vmlinux.lds.s FORCE
- $(call if_changed_rule,vmlinux__)
+.tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
+ $(call if_changed,vmlinux__)
-endif
+.tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
+ $(call if_changed,vmlinux__)
-# Finally the vmlinux rule
+# Needs to visit scripts/ before $(KALLSYMS) can be used.
+$(KALLSYMS): scripts ;
-vmlinux: $(vmlinux-objs) $(kallsyms.o) arch/$(ARCH)/kernel/vmlinux.lds.s FORCE
- $(call if_changed_rule,vmlinux)
+endif # ifdef CONFIG_KALLSYMS
-# The actual objects are generated when descending,
-# make sure no implicit rule kicks in
+# vmlinux image - including updated kernel symbols
+vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
+ $(call if_changed_rule,vmlinux__)
-$(sort $(vmlinux-objs)) arch/$(ARCH)/kernel/vmlinux.lds.s: $(vmlinux-dirs) ;
+# The actual objects are generated when descending,
+# make sure no implicit rule kicks in
+$(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
-# Handle descending into subdirectories listed in $(vmlinux-dirs)
+# Handle descending into subdirectories listed in $(vmlinux-dirs)
+# Preset locale variables to speed up the build process. Limit locale
+# tweaks to this spot to avoid wrong language settings when running
+# make menuconfig etc.
+# Error messages still appears in the original language
.PHONY: $(vmlinux-dirs)
$(vmlinux-dirs): prepare-all scripts
# A multi level approach is used. prepare1 is updated first, then prepare0.
# prepare-all is the collection point for the prepare targets.
-.PHONY: prepare-all prepare prepare0 prepare1
+.PHONY: prepare-all prepare prepare0 prepare1 prepare2
-# prepare1 is used to check if we are building in a separate output directory,
+# prepare2 is used to check if we are building in a separate output directory,
# and if so do:
# 1) Check that make has not been executed in the kernel src $(srctree)
# 2) Create the include2 directory, used for the second asm symlink
-prepare1:
+prepare2:
ifneq ($(KBUILD_SRC),)
@echo ' Using $(srctree) as source for kernel'
$(Q)if [ -h $(srctree)/include/asm -o -f $(srctree)/.config ]; then \
$(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm
endif
+# prepare1 creates a makefile if using a separate output directory
+prepare1: prepare2 outputmakefile
+
prepare0: prepare1 include/linux/version.h include/asm include/config/MARKER
ifneq ($(KBUILD_MODULES),)
$(Q)rm -rf $(MODVERDIR)
# Leave this as default for preprocessing vmlinux.lds.S, which is now
# done in arch/$(ARCH)/kernel/Makefile
-export AFLAGS_vmlinux.lds.o += -P -C -U$(ARCH)
+export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
# Single targets
# ---------------------------------------------------------------------------
# Generate some files
# ---------------------------------------------------------------------------
-# version.h changes when $(KERNELRELEASE) etc change, as defined in
-# this Makefile
+# KERNELRELEASE can change from a few different places, meaning version.h
+# needs to be updated, so this check is forced on all builds
uts_len := 64
define filechk_version.h
- if ((`echo -n "$(KERNELRELEASE)" | wc -c ` > $(uts_len))); then \
+ if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
exit 1; \
fi; \
)
endef
-include/linux/version.h: Makefile
+include/linux/version.h: $(srctree)/Makefile FORCE
$(call filechk,version.h)
# ---------------------------------------------------------------------------
sleep 1; \
fi
@rm -rf $(MODLIB)/kernel
- @rm -f $(MODLIB)/build
+ @rm -f $(MODLIB)/source
@mkdir -p $(MODLIB)/kernel
- @ln -s $(TOPDIR) $(MODLIB)/build
+ @ln -s $(srctree) $(MODLIB)/source
+ @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
+ rm -f $(MODLIB)/build ; \
+ ln -s $(objtree) $(MODLIB)/build ; \
+ fi
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
# If System.map exists, run depmod. This deliberately does not have a
endif
.PHONY: _modinst_post
_modinst_post: _modinst_
- if [ -r System.map ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
+ if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
else # CONFIG_MODULES
# Directories & files removed with 'make clean'
CLEAN_DIRS += $(MODVERDIR)
-CLEAN_FILES += vmlinux System.map kernel.spec \
- .tmp_kallsyms* .tmp_version .tmp_vmlinux*
+CLEAN_FILES += vmlinux System.map \
+ .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map
# Directories & files removed with 'make mrproper'
MRPROPER_DIRS += include/config include2
.PHONY: distclean
distclean: mrproper
- @find . $(RCS_FIND_IGNORE) \
+ @find $(srctree) $(RCS_FIND_IGNORE) \
\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
-o -name '.*.rej' -o -size 0 \
-o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
-type f -print | xargs rm -f
-# RPM target
-# ---------------------------------------------------------------------------
-
-.PHONY: rpm
-
-# Remove hyphens since they have special meaning in RPM filenames
-KERNELPATH=kernel-$(subst -,,$(KERNELRELEASE))
-
-# If you do a make spec before packing the tarball you can rpm -ta it
-spec:
- $(CONFIG_SHELL) $(srctree)/scripts/mkspec > $(objtree)/kernel.spec
-
-# a) Build a tar ball
-# b) generate an rpm from it
-# c) and pack the result
-# - Use /. to avoid tar packing just the symlink
+# Packaging of the kernel to various formats
+# ---------------------------------------------------------------------------
+# rpm target kept for backward compatibility
+package-dir := $(srctree)/scripts/package
-rpm: clean spec
- set -e; \
- cd .. ; \
- ln -sf $(srctree) $(KERNELPATH) ; \
- tar -cvz $(RCS_TAR_IGNORE) -f $(KERNELPATH).tar.gz $(KERNELPATH)/. ; \
- rm $(KERNELPATH)
+.PHONY: %-pkg rpm
- set -e; \
- $(CONFIG_SHELL) $(srctree)/scripts/mkversion > $(objtree)/.tmp_version;\
- mv -f $(objtree)/.tmp_version $(objtree)/.version;
+%pkg: FORCE
+ $(Q)$(MAKE) -f $(package-dir)/Makefile $@
+rpm: FORCE
+ $(Q)$(MAKE) -f $(package-dir)/Makefile $@
- $(RPM) --target $(UTS_MACHINE) -ta ../$(KERNELPATH).tar.gz
- rm ../$(KERNELPATH).tar.gz
# Brief documentation of the typical targets used
# ---------------------------------------------------------------------------
@echo ' tags/TAGS - Generate tags file for editors'
@echo ' cscope - Generate cscope index'
@echo ''
+ @echo 'Static analysers'
+ @echo ' buildcheck - List dangling references to vmlinux discarded sections'
+ @echo ' and init sections from non-init sections'
+ @echo ' checkstack - Generate a list of stack hogs'
+ @echo ' namespacecheck - Name space analysis on compiled kernel'
+ @echo ''
+ @echo 'Kernel packaging:'
+ @$(MAKE) -f $(package-dir)/Makefile help
+ @echo ''
@echo 'Documentation targets:'
@$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
@echo ''
@echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
@echo ' make O=dir [targets] Locate all output files in "dir", including .config'
- @echo ' make C=1 [targets] Check all c source with checker tool'
+ @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse)'
+ @echo ' make C=2 [targets] Force check of all c source with $$CHECK (sparse)'
@echo ''
@echo 'Execute "make" or "make all" to build all targets marked with [*] '
@echo 'For further info see the ./README file'
# We are always building modules
KBUILD_MODULES := 1
.PHONY: crmodverdir
-crmodverdir: FORCE
+crmodverdir:
$(Q)mkdir -p $(MODVERDIR)
-.PHONY: $(KBUILD_EXTMOD)
-$(KBUILD_EXTMOD): crmodverdir FORCE
- $(Q)$(MAKE) $(build)=$@
+.PHONY: $(objtree)/Module.symvers
+$(objtree)/Module.symvers:
+ @test -e $(objtree)/Module.symvers || ( \
+ echo; \
+ echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
+ echo " is missing; modules will have no dependencies and modversions."; \
+ echo )
-.PHONY: modules
-modules: $(KBUILD_EXTMOD)
+module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
+.PHONY: $(module-dirs) modules
+$(module-dirs): crmodverdir $(objtree)/Module.symvers
+ $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
+
+modules: $(module-dirs)
@echo ' Building modules, stage 2.';
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
modules_install:
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
-clean-dirs := _clean_$(KBUILD_EXTMOD)
+clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
.PHONY: $(clean-dirs) clean
$(clean-dirs):
# Generate tags for editors
# ---------------------------------------------------------------------------
+#We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
+#(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
+#Adding $(srctree) adds about 20M on i386 to the size of the output file!
+
+ifeq ($(KBUILD_OUTPUT),)
+__srctree =
+else
+__srctree = $(srctree)/
+endif
+
define all-sources
- ( find . $(RCS_FIND_IGNORE) \
+ ( find $(__srctree) $(RCS_FIND_IGNORE) \
\( -name include -o -name arch \) -prune -o \
-name '*.[chS]' -print; \
- find arch/$(ARCH) $(RCS_FIND_IGNORE) \
+ find $(__srctree)arch/$(ARCH) $(RCS_FIND_IGNORE) \
+ -name '*.[chS]' -print; \
+ find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
-name '*.[chS]' -print; \
- find include $(RCS_FIND_IGNORE) \
+ find $(__srctree)include $(RCS_FIND_IGNORE) \
\( -name config -o -name 'asm-*' \) -prune \
-o -name '*.[chS]' -print; \
- find include/asm-$(ARCH) $(RCS_FIND_IGNORE) \
+ find $(__srctree)include/asm-$(ARCH) $(RCS_FIND_IGNORE) \
-name '*.[chS]' -print; \
- find include/asm-generic $(RCS_FIND_IGNORE) \
+ find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
-name '*.[chS]' -print )
endef
quiet_cmd_tags = MAKE $@
define cmd_tags
rm -f $@; \
- CTAGSF=`ctags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_NOVERS"`; \
+ CTAGSF=`ctags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_GPL --extra=+f"`; \
$(all-sources) | xargs ctags $$CTAGSF -a
endef
-name '*.[hcS]' -type f -print | sort \
| xargs $(PERL) -w scripts/checkversion.pl
+buildcheck:
+ $(PERL) $(srctree)/scripts/reference_discarded.pl
+ $(PERL) $(srctree)/scripts/reference_init.pl
+
+namespacecheck:
+ $(PERL) $(srctree)/scripts/namespace.pl
+
endif #ifeq ($(config-targets),1)
endif #ifeq ($(mixed-targets),1)
+.PHONY: checkstack
+checkstack:
+ $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
+ $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
+
+kernelrelease:
+ @echo $(KERNELRELEASE)
+
# FIXME Should go into a make.lib or something
# ===========================================================================
include $(cmd_files)
endif
+# Execute command and generate cmd file
+if_changed = $(if $(strip $? \
+ $(filter-out $(cmd_$(1)),$(cmd_$@))\
+ $(filter-out $(cmd_$@),$(cmd_$(1)))),\
+ @set -e; \
+ $(if $($(quiet)cmd_$(1)),echo ' $(subst ','\'',$($(quiet)cmd_$(1)))';) \
+ $(cmd_$(1)); \
+ echo 'cmd_$@ := $(subst $$,$$$$,$(subst ','\'',$(cmd_$(1))))' > $(@D)/.$(@F).cmd)
+
+
# execute the command and also postprocess generated .d dependencies
# file
-
if_changed_dep = $(if $(strip $? $(filter-out FORCE $(wildcard $^),$^)\
$(filter-out $(cmd_$(1)),$(cmd_$@))\
$(filter-out $(cmd_$@),$(cmd_$(1)))),\
- @set -e; \
+ $(Q)set -e; \
$(if $($(quiet)cmd_$(1)),echo ' $(subst ','\'',$($(quiet)cmd_$(1)))';) \
$(cmd_$(1)); \
scripts/basic/fixdep $(depfile) $@ '$(subst $$,$$$$,$(subst ','\'',$(cmd_$(1))))' > $(@D)/.$(@F).tmp; \
if_changed_rule = $(if $(strip $? \
$(filter-out $(cmd_$(1)),$(cmd_$(@F)))\
$(filter-out $(cmd_$(@F)),$(cmd_$(1)))),\
- @$(rule_$(1)))
+ $(Q)$(rule_$(1)))
# If quiet is set, only print short version of command
git://git.onelab.eu / linux-2.6.git / blobdiff